The oil change interval for most long haul diesel engines is 25+K miles. Those engines usually use 10-15 gallons of oil opposed to 1-1.25 gallons of oil most car engines use, so 10-12 times the amount of oil therefore less contamination. Most long haul diesel engines run a million or more miles before they need to be torn down for an overhaul, but very few car engines make a million miles even with rebuilds. Highway diesel fuel also contains a maximum 15 PPM sulfur where gasoline contains a maximum 80 PPM sulfur, less than 1/5 the sulfur. Cleaner fuel means cleaner oil. The oil filters they are selling in the above post are probably toilet paper type filters where the oil is circulated through a regular size toilet paper roll not a few pleats of paper that conventional filters are made of, therefore filtering many more smaller contaminants from the oil and lots of particles that normally stay suspended in the oil until the oil is changed. Even then the paper roll has to be changed at a specified interval, I don't know what that interval is, because I've never used them (probably every 3-5K miles). The interval is probably available somewhere on the internet by searching toilet paper oil filter. Here's more information on the type filter I'm talking about and probably similar to the one you linked to.
Frantz Oil Filters